Typewriter ribbon device



Nov. 10, 1936. J HOCHMAN 2,060,314

TYPEWRITER R IBBON DEVICE Original Filed 001:. 28, 1931 3 Sheets-Sheet 1 INVENTOR Julius Cflockman BY g ATTORN EYS Nov. 10, 1936. J. c HOCHMAN 2,060,314

TYPEWRITER RIBBON DEVICE Original Filed Oct. 28, 1931 3 Sheets-Sheet 2 INYENTOR Julius C/Yocfiman BY ()Q X7 ATTO R N EYS Nov. 10, 1936.

J. c1 HOCHMAN TYPEWRITER RIBBON DEVICE 3 Sheeis-Sheet 3 Original Filed Oct. 28, 1931 INVENTOR .fal'as' C/Vae/Zmn ATTORNEY5 primarily for another purpose.

Patented UNITED STATES PATENT OFFICE Application October 28, 1931, Serial No. 571,504 Renewed September 27, 1934 I 25 Claims. "(01. 197-126) My present invention relates to typewriting machines an dis more particularly concerned with the instrumentalities for producing copies or duplicates in addition to the original ribbon copy.

The present invention in common with that of my prior patent, issued on October 6, 1931, .No. 1,826,074, has among its fundamental objects the use of any of various conventional makes of typewriting machines without any alteration whatsoever in the construction thereof, for simultaneously producing two or more ink original typewritten copies and to accomplish this with greater facility than with the use of carbon paper, to obviate the cumbersome procedure requisite in and carbon the course of typing, for erasures on original copies, all with assurance that the ribbon or ribbons for the duplicate copies will be effectively maintained throughout in proper correlation with the type for most satisfactory performance.

Another object of the present invention is to render possible at will the use of different ranges of width of a typewriter ribbon of conventional width so that the life of the ribbon will be greatly prolonged, or two or multicolor ribbons may be used.

Another object is the coordination of the typewriter ribbon frame for adaption to typewriting machines of different widths.

pendent displacement during use of the various ribbon frames with respect to each other.

Another object is the provision of a ribbon clip construction which affords no obstruction or enlargement by which the proper spacing of the ribbon with respect to the platen or of a plurality of ribbons with respect to each other would be impaired.

Another object is the provision of a ribbon clip construction easily applied and easily removed without the danger of smudging the fingers, and

' which affords during use a secure look without slack or looseness although the clip is made of thin and light stock.

A feature of the invention is the use of a plurality of upstanding stop portions at each end of the removab le ribbon frame, affording a choice of the positions in which the frame can be held in place by the paper bail, paper clip, or other instrumentality serving on the typewriting machine frame is of s Preferably the heet metal and the end arms thereof to which the ribbon length is clipped are provided each with a. unitary upstanding lugaffording a plurality of stops, preferably notches. Thus, depending on the notch or other stop construction with which the bail, paper clip or other in- 5 strumentality is brought into coaction, one or the other region of the ribbon width is brought into the range of type impact.

Another feature is the correct coordination of successive ribbon frames with respect to each It other in nesting relation and more especially by straddling each successive frame across the positioning-lugs of the primary or first frame, preferably the second and further frames each also having spacing lugs similar to those of the primary frame with all of which the paper bail, paper clip orother instrumentality used for positioning the first ribbon frame is thus brought into coaction.

Another feature is the construction of the holding means for removably attaching the ribbon to the frame by the use of a sheet metal clip at the end of the ribbon in which the terminal part of the clip is slightly out of the plane of the ribbon clamping end and the connecting straps are some in the plane of the terminal portion and others in the plane of the clamp, thus to afford space for the thicknes of the terminal mounting arm of the frame, which arm is tapered and affords a latch means coacting with one of the straps. The different parts of the mounting arm are preferably of different thickness complementary to the clip conformation to afford a relatively smooth continuousupper and lower surface of the clip conformation when the ribbon is mounted on the frame.

In the accompanying drawings, in which are shown one or more ofvarious possible embodimerits of the several features of the invention:

Fig. 1 is a perspective view of a typewriting machine of the Royal type, showing the manner of 40 installation of the ribbon frame thereon,

Fig. la is a fragmentary detail on a larger scale, showing the correlation of the ribbon frame and the bail,

Fig. 2 is a fragmentary perspective view on a larger scale illustrating the application of a secondary ribbon frame to the primary frame,

Fig. 3 is a fragmentary perspective view showing the application of the ribbon frame in one of its possible positions,

Fig. 4 is a view similar to Fig. 3 showing the installation in the second of its alternative positions,

Fig. 6 is a view similar toFig. 5 of the secondary frame,

Fig. 7 is a fragmentary front view on a greatly enlarged scale indicating the clip installed on the frame,

Fig. 8 is a view similar to Fig. '7 showing the rear face of the installed clip,

bon frame for a machine of the Underwood type,-

and

Fig. 14 is a view similar to Fig. 13 of a secondary ribbon frame for a machine of the latter type. p

Referring to Figs. 1 to 6 of the drawings, there is shown more particularly in Fig. 1 a perspective view of the carriage of a machine of the Royal type including side frames F mounting a platen 20, and platforms 2| for the usual ribbon spools 22 from one to the other of which the ribbon 23 is fed past vibrator clip 24.

In lieu of the carbon paper ordinarily employed for extra copies, extra ribbon copies are made by the use of the auxiliary ribbon frame con struction now to be described.

Referring more particularly to Fig. 5 this frame construction in a preferred embodiment comprises a unitary stamping 25 including a longitudinal sheet metal bar 26 extending substantially the length of the platen at right angles to'which bar extend unitary arms 21 preferably curved for accommodation to the curvature of the platen. Preferably the longitudinal bar 26 is stiffened by longitudinally bending the width thereof along fold 32 to afford'a fin 33 extending the entire length of the frame and having preferably a center finger tab 34. Between the lower ends of the two arms 21 a length of ribbon 28 is bridged and is releasably connected in place by a clip structure C to be more fully described below.

Positioning stop elements rise from the arms 21, and these, in the preferred embodiment, involve unitary sheet metal lugs 29 extending upward at right angles to each of the arms 21 and preferably from the inner edges 30 of said arms. The lug 29 is illustratively shown provided with two notches 3| with either of which the paper holding bail B may engage as more fully set forth below.

The over-all length of the frame 25 is preferably slightly less than the distance between the side frames F of the machine so that when the ribbon frame 25 rests upon the platen, a slight freedom of movement thereof lengthwise of the platen is afforded between side frames F.

In use it will be apparent that the ribbon frame just described, with its ribbon attached thereto as shown in Fig. 5 is simply placed over the second sheet S2 on the typewriting machine and below the first sheet- S|, the sides of which will be straddled by lugs 29. When the paper ball .8 is now positioned to bridge across either of the two pairs of notches 3| of the two lugs 29, the

the ribbon frame to thereby produce the second or duplicate ribbon copy on sheet S2.

As shown in the drawings and particularly in Fig. 1a thereof, the notches 3| of the positioning lugs are somewhat wider than the bail B so that when the latter is in position the ribbon frame is nevertheless .aiforded some limited freedom of movement in direction peripherally of the platen.

The clearance between the ends of the ribbon frame 25 and the typewriter frame, and the clearance between the bail and the sides of the notches 3| afford assurance that different areas of the ribbon are exposed to impact in successive emplacement of the ribbon frame for use. Moreover the impacts occurring in typewriter action particularly in the line stop action and in the line shift action bring about slight displacements of the ribbon frame during actual use, and thus afford further assurance that different areas of the ribbon are subjected to type impact in the course of use. The freedom of movement or clearance longitudinally, is preferably in the order of the letter spacing, which thus greatly enhances the effective area of ribbon usefully employed.

In the'embodiment shown, where the frame is equipped with two sets of positioning notches, it is of course understood, as best illustrated in Figs. 3 and 4, that the use of the upper pair of notches as for instance in Fig. 3, exposes the upper half of the ribbon to type impact, and the use of the lower pair of notches as illustrated, for instance, in Fig. 4, effects exposure of the lower half of the ribbon to type impact, rendering possible the effective use of a two-color ribbon, and rendering possible the thorough utilization of various areas of a single-color ribbon. Of course, the device can readily be reorganized to provide three or more choices in initial positioning, with the use of a ribbon of greater than conventional width,

if desired; although for practical purposes the two alternative positionings shown in the drawings are ordinarily suflicient.

By the construction thus far described only one auxiliary ribbon copy is produced in addition to the primary ribbon copy although, of course, additional carbon sheets could be used in conjunction with the ribbon.

By my invention it is also contemplated simultaneously to produce two or more ribbon copies in addition to the spool ribbon copy, and for this purpose a set of auxiliary ribbon frames are provided, one of which is best shown in Fig. 6. The construction of this auxiliary ribbon frame in general, is identical with that of the ribbon frame of Fig. 5, and corresponding parts are designated by the same numerals as those of Fig. 5 with prime characters amxed. One difference is that the-finger tab 34' is not at the middle of the fin 33', but to one side so that the tabs will not overlap when the frames are superposed.

The modeof positioning the secondary frame of Fig. 6 is best illustrated in Fig. 2 in which it will be seen that the arm 21 of said auxiliary frame is superposed over the arm 21 of the primary frame with the inner edge of the auxiliary frame spaced slightly from the outer face of the positioning lug 29 on the primary frame. Preferably the secondary frame 21 has upstanding lugs 29' similar to those of the primary frame, which lugs are spaced from the lugs 29 of the primary frame when the two frames are nested. Thus the distance between the lugs 29' on the secondary frame is greater than that between the corresponding lugs on the primary frame by more than twice the thickness of the metal stock, and the lugs on a third frame for a third ribbon would be spaced by a correspondingly still greater distance, and this relation is carried forward to a fourth frame.

It will thus be seen that for making two extra duplicates the ribbon of the primary frame would be directly superposed over the last of the sheets to be imprinted, and the ribbon of the secondary frame in Fig. 6 would be superposed over the second sheet, with the arms and brackets coordinated as previously described. The paper ball will coact with the secondary frame exactly as it does with the primary frame, affording a similar freedom of displacement.

in Figs. 11 to la is shown the mode of application of the invention to a typewriting machine of the Underwood type. In this case referring to Fig. 13, the primary frame bears general simi larity to that of Fig. 5 of the Royal type. The bar it also has a fin bent up at edge 62, but the fin in this case is foreshortened' to afford room for the hubs 3d of the paper clips it employed on this type of machine. The paper clip of this machine has an inturned portion die the outer portion of which mounts the paper engaging arm as. In order to accommodate offset tie, the positioning lug ll on the frame must be closeadjacent the lower edge of bar lii. To aiiord the necessary space the edge :28 of the lug i'l is simply slit or sheared from the corresponding edge of bar it and turned up. The extremely thin end sections of the frame would be too flexible for the intended purpose and these are, therefore, stiffened, each preferably by an elongated embossment as thereon. The ribbon unit tit and the clip attachment (3 affixing the latter to the arms at of the frame, are identical with the corresponding elrnents of the embodiment previously described.

The use of the device will be entirely obvious from the previous description, it being understood that the two notches 52 in each of the lugs dl afford the desired choice in the width of ribbon exposed to type impact. In this case as in the other embodiment the over-all length of the frame is slightly less than the distance between the side frames F of the machine and the notches 52 are somewhat wider than the thickness of the paper clips, thereby affording the freedom of positioning range and the freedom of movement previously set forth.

Fig. 14 shows a secondary frame, which is related to the primary frame in substantially the same manner as is the secondary frame of Fig. 6 to the primary frame Fig. 5. Corresponding parts bear the same reference numerals in Figs. 13 and 14 except that these in the latter are primed. The embossment is of Fig. l l is somewhat wider than embossment it of Fig. 13, so that when these two frames are nested embossment at will embrace embossment with some clearance and thus permit slight relative movement of the two frames peripherally of the platen.

For each make of typewriting machine now or that may hereafter be in existence the auxiliary ribbon frame is proportioned, within the scope of the present invention to clear the various parts standard on the machine and in each case the auxiliary ribbon frame may be used without alteration in the construction of the typewriting machine.

While in each case both the primary and the secondary ribbon frames are parts separate and distinct from the typewriting machine, to be merely laid in position at each letter-writing and removed as the sheet is taken out of the machine,

it is within the scope of the invention in its broader aspects to coordinate the ribbon frame or frames with the typewriting machine in such manner as to become a part thereof, not to be bodily removed therefrom, although it is .arranged to afford limited freedom of movement as and for the purpose previously pointed out.

The releasable ribbon mounting means generally designated by reference character C will now be set forth.

In a preferred embodiment each end of the ribbon length is provided with a sheet metal clip of thin stock one end ti of which is inwardly turned or crimped as at 62 and indented as at $2 to securely clamp the end of ribbon R so that the clip in effect is irremovable from the ribbon without destroying the clip, the ribbon or both.

The free end of the arm 2? of the ribbon frame is tapered at its outer edge 63 to afford a wedging coaction with the correspondingly inclined conformation on the clip. For this purpose the outer extremity til of the clip, which preferably serves as a finger tab, is parallel to but displaced from the plane of the clamping end '35, by a distance substantially equal to the thickness of the mounting arm 2i. This result is accomplished by straps tit and till integrally joining the finger tab tie and the clamping end 69 of the clip. The straps es and be as shown are in the plane of the clamping end 6 6, while the intermediate strap til is in the plane of the finger tab 66. Thus the straps 65 and 6B are out of the plane of finger tab ed to which they are connected by bridging shoulders t5 and respectively. Similarly strap Bl is out of the plane of the clamping end M to which it is connected by the bridge ti. As

shown the straps t5, 6'? and 68 are of successively lesser length and the tab ends of said straps as well as their bridging connections are inclined with respect to the length of the clip to accommodate the inclined or wedging edge 63 of the mounting arm. Accordingly the clip may be apiii plied over the mounting arm by passing the latter under strap as, over strap 6'5 and under strap 66, strap t? being displaced out of the plane of straps 6t and 65 to a degree sufiicient to accommodate the thickness of the mounting arm.

The oblique edge 63 of the mounting arm is provided with a notch it afiording a shoulder H at its lower edge where said shoulder snaps under the lower edge of bridge 65' when the clip is applied, thereby latching the same in position. In this connection it is noted that the sheet metal frame 25 and particularly the length of bar 26 thereof, has sufficient resilience to yield under the wedging action incurred in passing the clip over the arm, so that the opposed tapered edges 63 of the arms El tend to spring apart and exert a tension upon the ribbon length 28 to keep the latter taut.

In order to provide a smooth surface at both faces of the installed clip, the mounting arm does not present an uninterrupted surface, but it is swedged down at different parts of the length thereof complementary to the gaps and protuberances in the clip construction previously described. Accordingly, the arm is thinner as at it at its lower end which extends under strap 66. The arm is left untouched at it at the region between the edges of straps t5 and thus to afford a surface as best shown in 'l and 9 extending substantially flush with the faces of strap 55 and strap 66.

From another point of view the tapered arm 21 is thinner at the areas 10 and 15 to accommodate. the thickness of straps 65 and 6B respectively which are thus made to lie flush with the exposed face 16 of the arm. Thus when the clip is'in mounted position the clamping portion 6|, the straps 65 and 66 and the exposed part 16 of the mounting arm all he in substantially a common plane coincident with that-of clamping end 6| and slightly above the plane of the flnger tab 64.

In a similar manner the under or convex face of the mounting arm is swedged down to determine a surface when the clip is afllxed, substantially flush with the finger tab portion 64 of the clip. Thus the under face of the arm is indented to make room for strap 61 and for the portion of the clip tab which lies u'ndemeath latch shoulder H. The oblique edge 63 of the arm overlapping part of tab, rocking of the clip .relative to the edge of the arm, and unlatching are prevented. Thus the clip when applied to the arm affords a latch structure presenting a flat upper surface and parallel therewith a fiat lower surface. Thus the primary frame will lie at the underface of the clip snugly upon the platen and the successively nested secondary frames will lie with their arms and ribbon clips snugly against the arms and ribbon clips of the frames thereunder.

' While the protruding latch shoulder ll of the mounting arm is desirable, it will be apparent that the upper edge Eli-11 of the mid-section 16 of the arm affords a stop shoulder for the strap 65 of the clip to maintain the latter in mounted position. In the preferred construction however, as shown, the shoulder 66-a and the latch tooth H both cooperate for secure snug engagement therewith respectively of the lower edge of strap 65 and the lower edge of the bridge end 65 there of. In mounted position the taut ribbon draws these bridging edges 65' and 66 snugly against the registering portions of the tapered edges of arms 21.

In applying the ribbon one of the clips is readily passed over the mounting arm in the manner previously described, and the opposite end similarly wedged in place against the resiliency of the frame, thus tautening the ribbon. In use the ribbon as it becomes thinner due to type impact may stretch slightly but the stressed frame has sufficient resiliency to take' up such slack and throughout use maintain the ribbon taut.

The used ribbon is readily removed from the frame by drawing outward on the finger tab 64 to release the latch point H, whereupon the clip readily passes off the arm.

While it is preferred to provide identical wedging arms at opposite ends of the frame and identical clips at opposite ends of the ribbon length,- it will be understood that one end of the ribbon may be securely connected to the corresponding arm in any desired manner, the wedging clip construction being used in such embodiment, only for affixing the other end of the ribbon on the corresponding arm of the mounting frame, and applying tension to the ribbon by the wedging action incurred in such application.

While the ribbon frames are of length to adapt them for typewriting machines of standard width,

it is apparent that they admit of use on such machines of extra width. For such purpose the ribbon rollers r on the Royal machine, (Fig. 1),

or the paper clip hubs 44 on the Underwood machine (Figs. 11 and 12) would merely be shifted to such position as to function as the stops for limiting the end-wise movement of the respective ribbon frames.

It will thus be seen that there is herein described, apparatus in which the several features of this invention are embodied, and which apparatus in its action attains the various objects of the invention and is well suited to meet the requirements of practical use.

As many changes could be made in the above construction, and many apparently widely diflerent embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in alimiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

i 1. In a typewriting machine, a separable ribbon carrier having alternative means adapted to be contacted by a movable portion of the typewriting machine which serves primarily for another purpose, such alternative means serving for positioning of the ribbon for exposure of alternative portions of its width to type impact.

2. In a typewriting machine, a separable ribbon carrier including a bracket having alternative sets of positioning means unitary therewith, said carrier having releasable holding means for a typewriter ribbon, said positioning means being coordinated with a manually movable portion of the machine serving primarily for another purpose, and adapted to dispose at will alter-.

native regions of the width of the typewriter ribbon to type impact. v

3. In a typewriting machine a removable aux- .iliary ribbon carrier comprising a frame having ranged with respect to said positioning elements to dispose said carrier with any of a choice of portions of the ribbon width in impact position.

4. In a typewriting machine, the combination of a platen and an auxiliary ribbon holder frame having legs with releasable latch elements for positioning a length of typewriter ribbon therebetween, said frame having a plurality of upstanding stop portions near each end thereof, said typewriting machine being equipped with manually displaceable means serving primarily for another purpose with which any of the stop portions of the ribbon holder is adapted to be brought into coaction in order to dispose any one of a plurality of portions of the width of the typewriter ribbon in typing coaction, each of said stop portions affording limited peripheral clearance for displacement of the ribbon holder incidental to typing action.

5. In a typewriting machine of the type equipped with a platen and with a paper holding bail; the combination therewith of an auxiliary ribbon holder comprising a frame adapted to be removably positioned upon the platen and having releasable holding means for the length of a typewriter ribbon, said frame having a plurality of upstanding stop portions at each end thereof adapted to be brought into position for coaction with said bail, thereby to retain the ribbon frame in selected operative position.

6. In a typewriting machine of the type equipped with a platen and with a paper holding bail; the combination therewith of an auxiliary ribbon holder comprising a. frame adapted to be removably positioned upon the platen and having releasable holding means for the length of the typewriter ribbon, said frame having a plurality of upstanding stop portions at each end thereof adapted to be brought into position for coaction with said bail, each pair of said stop portions affording clearance with respect to said bail to permit limited choice of positioning and limited displacement of said frame peripherally of the platen during type action.

'2. in a typewriting machine of the type equipped with a, platen and with a paper holding bail; the combination therewith of an auxiliary ribbon holder comprising a frame adapted to be removably positioned upon the platen and having releasable holding means for the length of the typewriter ribbon, said frame having a plurality of upstanding notches at each end thereof and aligned in pairs, in any pair of which aligned notches the bail is adapted to be lodged, thereby to afford choice in the effective width of ribbon subjected to type impact.

8. In a typewriting machine of the type equipped with a platen and with a paper holding bail; the combination therewith of an auxiliary ribbon holder comprising a frame adapted to be removably positioned upon the platen and having releasable holding means for the length of the typewriter ribbon, said frame having a plurality of upstanding notches at each end thereof, each of said notches of width greater than the thickness-of the bail, thereby to afford limited choice in initial positioning and limited range of shift of position of said ribbon frame peripherally of the platen.

9. A typewriting machine of the character provided with a platen and with a pair of paper holding clips each of which includes an arm having a portion of the length thereof extending longitudinally of the platen; the combination therewith of a removable ribbon holder comprising a metal frame having downwardly extending arms with releasable latch means for a length of typewriter ribbon, said holder having a pinrality of upstanding stop portions at each end thereof between any two of which the longitudinal portion of the corresponding paper clip is adapted to enter, thereby to retain the ribbon holder at will in any of a variety of effective positions for type impact.

10. a typewriting machine of the character provided with a platen and with a pair of paper holding clips each of which includes an arm havrtion of e L-H thereof extending l iaten; the combination vable ribbon holder compris- M 3 psi?) i thereof between any nal portion or" the corresponding paper clip is adapted to enter, the distance between said stop portions exceeding the thickness of the coacting paper holder portion to afford limited clearance thereat.

11. A typewriting machine of the character including a platen and a paper holding bail having a pair of rubber rollers thereon, an auxiliary ribbon holder comprising a frame separate and distinct from the typewriter and adapted to be located upon the platen in any of a plurality of peripheral positions, said rollers being displaceable along said bail toserve as end stops for positioning said frame and limiting the longitudinal movement thereof.

12. In a typewriting machine the combination of a platen, a removable typewriter ribbon frame adapted to coact with said platen and having releasable ribbon holding latches, said frame having a plurality of upstanding lugs, a coacting recondary ribbon holder having lateral portions adapted to enact with the upstanding lugs of the first ribbon holder, the coordinated ribbon holders including registerable positioning structures adapted to be loosely retained in substantial reg istration for slight independent movement with respect to each other by a manually movable portion of the typewriting machine which serves primarily for another purpose.

13. In a typewriting machine the combination of a carriage including a platen and a ribbon holder frame comprising a generally U-shaped element extending the length of the platen and having flat lateral arms with unitary lugs rising from the inner edges thereof, the free ends of said arms including releasable latch means for positioning a length of typewriter ribbon therebetween, a secondary typewriter frame generally similar to said first frame and having upstanding lugs to straddle the lugs of the said first frame, and spaced therefrom to afford limited clearance, the lugs of each of said frames including a plurality of notches adapted for coaction with a movable portion on the typewriter carriage to iii selectively position said ribbon frames in co= ordinated relation to the machine.

14. An auxiliary typewriter ribbon holder of the type adapted. to be bodily removed from the typewriting machine in the course of normal use,

said frame comprising a unitary sheet metal stamping having a longitudinal bar portion to extend lengthwise of the platen, arms unitary therewith, a length of ribbon having terminal clips adaptable for releasable connection to the ends of said arms, a plurality of unitary upstanding stop conformations rising from each of said. arms, and a unitary handle tab projecting from said bar.

15. A typewriter ribbon holder construction including a tapered mounting arm and a coacting iii clip afixed to the end of a length of ribbon, different portions of the mounting arm being of different thickness, said clip including straps for accommodating said arm and having the outer surfaces of the metal thereof in different parallel planes spaced from each other by substantially the maximum thick 0 s of s id arm, difierent portions oi said mg of erent thickness compiementary to the corresponding clip construction to afford an of substantially uniform tl'iichness.

16. A typewriter r mounting arm having a ap ribbon having a term plementary to said mounting i- -i .ding a ribbon attaching portion at one end, a finger tab at the opposite end, unitary strap connection between said ribbon mount and said finger tab, the outer surfaces of said strap connections being in two different planes spaced by the maximum thickness of the mounting arm, some of said strap connections being in the plane of the ribbon terminal and the remaining strap connections in mount comprising a construction, a

the plane of the finger tab, each of said straps at one end having a unitary bridgingconnection to the corresponding part of the clip, said taper mounting arm having a shoulder coacting with one of said bridging connections for latching the elements together with the opposite faces of the taper mounting arm straddled by said straps.

17. A typewriter ribbon mount including a terminal clip affixed to a ribbon length, said clip having a unitary finger tab parallel to but slightly out of the plane of the ribbon clamp, unitary strap elements connecting said ribbon clamp and said finger tab, some of said straps in the plane of said clamp and the other of the straps in the plane of said finger tab, unitary bridging connections between the ends of the straps and the elements out of their respective planes thereof to which they are connected, a tapered mounting arm for said clip, said arm being of different thickness at different parts of the length thereof to extend substantially flush with the ribbon clamping end at one face of the mounted clip and with the finger tab at the other face of the mounted clip.

18. A typewriter ribbon mount including a terminal clip amxed to a ribbon length, said clip having a unitary finger tab parallel to but slightly out of the plane of the ribbon clamp, unitary strap elements connecting said ribbon clamp and said finger tab, some of said straps in the plane of said clamp and the others of the straps in the plane of said finger tab, unitary bridging connections between the ends of the straps and the elements out of their respective planes thereof to which they are connected, a tapered mounting arm for said clip, said arm being of different thickness at different parts of the length thereof to extend substantially flush with the ribbon clamping end at one face of the assembled clip and with 'the finger tab at the other face of the assembled clip, said tapered arm having a unitary tooth coacting with one of the bridging parts of the clip for releasable latching connection therebetween. i

19. A typewriter ribbon mount construction including a tapered mounting arm, a metal clip having a clamping portion afilxed to a ribbon temiinal and a free portion parallel to said clamping portion but slightly out of the plane thereof, three parallel straps integral with said ribbon clamp and with said free portion and spaced apart by less than the thickness of said mounting arm, said straps aflording bridges at the free portion, in inclined relation for coaction with the inclined edge of the mounting arm, said mounting arm having a projecting tooth adapted in mounted relation to extend under the bridge of one of the straps forreleasably latching the elements together.

20. As an article of manufacture, an auxiliary ribbon holder for a typewriting machine, said holder comprising a frame including ribbon mounting arms, a ribbon coacting with the arms of said frame, said ribbon having tips aflixed thereto, the tips and arms being conformed for automatic positioning of said ribbon, said tips and arms being further conformed to afford assembly of the tips withinthe thicknesses of the respective arms.

21. As an article of manufacture, an auxiliary ribbon holder for a typewriting machine, said holder comprising a resilient frame including ribbon mounting arms, a ribbon coacting with the arms of said frame, said ribbon having tips aflixed thereto, the tips and arms being conformed for automatic positioning and tautening of said ribbon, said tips and arms being further conformed to afford assembly of the tips within the thicknesses of the respective arms.

22. As an article of manufacture, a typewriter ribbon clip adapted for use with a holding frame, said clip comprising a unitary sheet metal piece adapted to be crimped at one end about the end of a length of typewriter ribbon, and formed with spaced parallel straps adapted to seat in recesses in the holding frame, said straps cooperating with the recesses to latch the clips in place i on said frame.

23. As an article of manufacture, an auxiliary ribbon holder for a typewriting machine, said holder comprising a frame including ribbon mounting arms, a ribbon coacting with the arms ofsaid frame, said ribbon having tips affixed thereto, the tips and arms being conformed to afford assembly of the tips within the thickness of the respective arms.

24. In an auxiliary ribbon holder for a typewriter, a ribbon mounting arm having parts of its ribbon mounting portion of a thickness less than the thickness of the remaining parts of the arm, to afford space for the assembly of a ribbon element within the thickness of the arm.

25. A typewriter ribbon mount construction comprising an arm having parts of its ribbon holding portion of different thicknesses, and a ribbon having attaching elements aiilxed thereto, said attaching elements being formed with spaced parallel straps adapted to seat in recesses in the arms to afford an assembly of substantially uniform thickness.

JULIUS C. HOCHMAN. 

